Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified							12 Months Ended				12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Land	Dec. 31, 2012 Land	Dec. 31, 2013 Fiber, conduit and other outside plant	Dec. 31, 2012 Fiber, conduit and other outside plant	Dec. 31, 2013 Fiber, conduit and other outside plant Minimum	Dec. 31, 2013 Fiber, conduit and other outside plant Maximum	Dec. 31, 2013 Central office and other network electronics	Dec. 31, 2012 Central office and other network electronics	Dec. 31, 2013 Central office and other network electronics Minimum	Dec. 31, 2013 Central office and other network electronics Maximum	Dec. 31, 2013 Support assets	Dec. 31, 2012 Support assets	Dec. 31, 2013 Support assets Minimum	Dec. 31, 2013 Support assets Maximum	Dec. 31, 2013 Construction in progress	Dec. 31, 2012 Construction in progress
Property, plant and equipment
Property, plant and equipment	$ 10,193	$ 9,242	$ 356	$ 356	$ 4,033	$ 3,475			$ 3,026	$ 2,611			$ 2,470	$ 2,428			$ 308	$ 372
Accumulated depreciation	(2,985)	(2,011)
Net property, plant and equipment	$ 7,208	$ 7,231
Depreciable Lives							15 years	45 years			4 years	10 years			5 years	30 years